不同工况下带电作业绝缘毯局部放电及击穿特性Partial Discharge and Breakdown Characteristics of Insulating Blankets in Live Working under Different Operation Conditions
张玮亚,陈中,宫衍平,王舒凡
摘要(Abstract):
为掌握带电作业绝缘毯在不同工况下的局部放电及击穿特性,选用了10 kV绝缘毯作为研究对象,测量其在80°C热老化、20~80°C温度区间及不同浸水时长条件下的局部放电起始电压及击穿电压参数。结合直流电导率测试、宽频介电响应及红外光谱分析等方法,揭示了温度及热老化对不同工况下绝缘毯性能的作用机理。结果表明,绝缘毯应避免在80°C及以上温度使用,且当温度高于40°C时应注意其绝缘性能降低所产生的风险。
关键词(KeyWords): 带电作业;绝缘毯;不同工况;局部放电;击穿
基金项目(Foundation): 国网江苏省电力有限公司孵化项目(JF2021027)
作者(Author): 张玮亚,陈中,宫衍平,王舒凡
DOI: 10.19635/j.cnki.csu-epsa.001025
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